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| The hemi-fourth interval (around 250 cents) when taken as a generator, and an octave is taken as the generator, a 9-note scale is possible:
| | * For the temperament, see [[Diaschismic family #Hemifourths]]. |
| | * For the MOS scale, see [[5L 4s]]. |
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| LsLsLsLsL
| | {{Disambiguation}} |
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| It is an [[MOSScales|MOS scale]], of [[MOSNamingScheme|type]] "unfair bug", with SEVEN triads, subminor or supermajor. Holy holes. If the generator is around 248-250 cents, we might take this as representing a MOS in [[The_Archipelago|barbados temperament]].
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| == The family ==
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| A map of 3 levels of the [http://www.microtonalsoftware.com/scale-tree.html?left=5&right=4&rr=1200&ioi=250 scale tree] between g=1/5 and 1/4
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| [[File:hemifourths.PNG|alt=hemifourths.PNG|hemifourths.PNG]]
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| So, to the right of 2/9 lie "fair" 9-note scales, and to the left lie the "unfair" ones. The easy way to think about this: if the generator is closer to 5 in the denominator, then the 5 intervals will be bigger.
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| == Examples ==
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| * voice-leading sketch in 24-EDO's flavor of hemifourths[9]
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| * [[:File:qt_mode_chord_prog.mp3|qt mode chord prog.mp3]]
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| == Music ==
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| [http://www.soundclick.com/bands/songInfo.cfm?bandID=376205&songID=5327098 Entropy, the Grandfather of Wind] (broken link. 2011-03-04) in [[14edo]]'s flavor of hemifourths[9] {{dead link}}
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| == See also ==
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| * [[Diaschismic_family#Hemifourths]]
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| * [[5L 4s]]
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| [[Category:9-tone scales]]
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| {{todo|review}}
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